<?xml version="1.0"?>
<fes:Filter
   xmlns:fes="http://www.opengis.net/fes/2.0"
   xmlns:myops="http://www.someserver.com/myops/1.0"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://www.opengis.net/fes/2.0 http://schemas.opengis.net/filter/2.0/filterAll.xsd http://www.someserver.com/myops/1.0 ./myOps.xsd">
   <fes:And>
      <fes:PropertyIsGreaterThan>
         <fes:ValueReference>Person/age</fes:ValueReference>
         <fes:Literal>50</fes:Literal>
      </fes:PropertyIsGreaterThan>
      <fes:PropertyIsEqualTo>
         <fes:ValueReference>mailAddress/Address/city</fes:ValueReference>
         <fes:Literal>Toronto</fes:Literal>
      </fes:PropertyIsEqualTo>
      <myops:MyNewOperator>
         <myops:Arg1>Value1</myops:Arg1>
         <myops:Arg2>Value1</myops:Arg2>
         <myops:Arg3>Value1</myops:Arg3>
      </myops:MyNewOperator>
   </fes:And>
</fes:Filter>
